Dust-collector.



W, T. HARDER DUST COLLECTOR. APPLICATION FILED TEBJ, 1911. RENEWED JAN. 4, 1913.

Patented Mar. 18, 1913.

2- SHEBTS-SHE ET l.

awe/whoa wwmoaw W. T. HARDER.

DUST COLLECTOR.

APPLIOATION FILED FEB.1,1911. RENEWED JAI1'.4,1913.

Patented Mar. 18, 1913.

2 SHEETS-SHEET 2.

wue/wto v T all whom it may concern UNITED STATES PATENT GFFIQE.

I WILLIAM '1. HARDER, OF SOUTH BALTIMORE, MARYLAND.

DUST-COLLECTOR.

Specification 0! Letters Patent.

Patented Mar. 18, 1913.

Application filed February 1, 1911, Serial No. 605,900. Renewed January 4, 1913. Serial No. 740,238.

Be it known that I, WILLIAM T. HARDER,

i a citizen of the United States, residing at South Baltimore, in the county of Anne Arundel and State of Maryland, have invented certain new and useful Improvements in Dust-Collectors, of which the't'ollowing isa specification.

Y This invention relates to dust collectors, and is particularly adapted for use in apparatus the operation of which necessitates .the separation and deposit of quantities,

series.

usually very large quantities, of dust from fumes or vapors. manufacture of sulfuric acid, the pyrites fines run through the burner, result in the sending over with the gas produced an enormous amount of fine dust that must be collected and removed in some manner. In attempting to make the dust chambers large enough to be effective, the tem erature of the gases is often reduced to sue anextent as to interfere with the further steps of the process. Furthermore, in those dust collectors with which many such apparatuses are equipped, it is extremely diificult to get the dust outafter it is caught, without at fecting the quality of the desired product.

It is the object of this invention to produce a dust collector suitable for receiving. the deposit of great quantities of dust, and which may be periodically unloaded or dumped into dust pits, without affecting the interior temperature of the chambers containing the invention.

This invention consists of adjacent walled chambers provided interiorly with sets of' dust-collecting shelves, usually one set of shelves in a single chamber, and the chambers and sets of shelves being arranged in Each set of shelves is supported upon trunnions, and is revoluble within the chamber by means of suitable contrivances accessible from without. Each chamber is provided with a dust pit beneath the set of shelves, having a door from which the dust. may be removed.

'lhis-invention is illustrated in the accompanying drawings, of which- Figure 1 represents a vertical section lengthwise of a series of chambers constructed in accordance with this invention and provided with sets of shelves with operating means shown therefor. Fig. 2 is an ex ternal side view of a set .of chambers, hav- For example, in theing a part of the front wall broken away, and showing one set of shelves in the dumping position. Fig. 3 .is a vertical cross-section on broken line ww of Fig. 2, and Fig. 4 is a perspective view of a set of shelves alone.

The same letter is employed to-refer to the same part throughout the description and drawings.

The series of chambers A, has a gas inlet B, that may be opened and closed by a damper b, and, at the other end of the series is an outlet C, governed by a damper 0. Each chamber is constructed with a dust pit D, having the door d, the pit being arranged directly below the set of shelves E.

The supporting trunnions of the set of shelves are marked F and G, andthe trunnion F is provided with a gear H, operated by a pinion J on a stub shaft that is turned by acrank K. The function of the shelves is to receive the dust deposited as gases laden with dust pass, usually some what slowly, through the sets of shelves, and between the shelves of each set lying horizontally one above another.

Considering Figs. 1 and 2, it will be noted that, when all the sets of shelves are arranged in receiving position, that is to say, with the shelves horizontal, any set of shelves may be individually turned'upon its trunnions, for the purpose of dumping its contents into the pit 1), without disturbing the remaining sets of shelves, and that the chambers are constructed, and the distances between the sets of shelves fixed to permitthe movementwithout making the chamber any larger than is necessary. Economy of construction is believed to be in, that way accomplished without danger of loss of heat. Again, it will be observed that the set of shelves is coextensive with the openings be.- tween the chambers, and, therefore. all the gas must pass through the sets of shelves. In other words, it is thought that a dust collector constructed in accordance with this lnventlon, provides dust-arresllng (lustcollectot the combination chamber having a dust pit and pit I set of shelves composing a plw o1 shelves arranged one above an- ;ml connected together, the seitl set of being" i'evoluhle a Whole Within 1e chamber, and means extending Without er eonsti'nctecl to actuate the set shelves.

l. a dust collector, the combination with s eheinheihaving a, dust pit and pit door the .Stll chsiiihei' having openings on both sitles, ot' a set of shelves revolulo-le as :1 whole Within the chamber, the said set of shelves being co-extensive with the ssicl opeiiiii 's in the chamber, and means extending without the chamber constructed to actuate the set of shelves.

3. Li :1 dust collector, the combination -with s chmiibe having dust pit and pit door, the said chamber having a, gas inlet and e, outlet provided with dampers, of z shelves i'evoluhle as a Whole within. the chamber Eflfil means extending Withchamber consttuet tl o actuate the communication of -il-. In e (lust collectzx' the coinlsin with s chamber having at (lust clooi', the sale. chamber having" both sides, of means for con page of through the sale: o; of shelves ievoluble es sw chamber, the said set oi: extensive with the SfllLl o of e chamber and mean attend e s e i chamber constructed to LCtllZlt-G the set 0-: shelves In is, dust collector the comhinstion with a series of chmnhers having openings at the ends whereby the chambers are it sets of shelves pivotslly supported. Within the chambers the said sets of shelves being co-ezfceosive with said op nbetween the chambers, and. means tending Without the chambers constructed to actuate the sold sets of shelves each set as a whole:

In testimony Wlie'ieot l affix my signature in presence of two Witnesses. 

